View Full Version : iMac (iSight) GPU Temp worrying

Nov 19, 2005, 06:52 AM
Just happen to get my brand new iMac 2 days ago, and the heat issue is worrying me; and this ain't CPU, but it's the GPU instead. Using X Resource Graph and Temperature Monitor, both had the GPU Temp reading around 75-79°C/167-174°F, running non-graphically intensive applications.

My question is, does anyone with the same batch of iMacs ever experience such problem....?

Another one will be the NB Temp which hits close to 85°C/185°F....

Here's the following temp reading taken from Temperature Monitor:

CPU Temp 59.4°C/138.9°F
GPU Ambient 71.9°C/161.4°F
GPU Temp 76.5°C/169.7°F
HD Temp 51.0°C/123.8°F
Incoming Air Temp 33.0°C/91.4°F
NB Ambient 61.5°C/142.7°F
NB Temp 81.8°C/179.3°F :eek:
ODD Temp 44.5°C/112.1°F

On the sidelines, my iMac hasn't given me any other problems as reported by other forummers, my iMac's very quiet though. Even though running proc-intensive apps, the CPU fan's barely audible....

Nov 19, 2005, 06:57 AM
Is this while playing games or doing something 3d related?:confused:

Nov 19, 2005, 07:03 AM

just web-surfing and basic word-processing.....

Nov 19, 2005, 07:13 AM
See if it goes up when you do something specially GPU demanding. GPU's sometimes do run that hot actually.. especially a 6800GT but it should not go above what it is already.

Nov 19, 2005, 07:24 AM
yes, apparently it does..... with screensavers alone it hits above 80C/176F....

Nov 19, 2005, 07:46 AM
That does seem hot I'm not sure what is normal for an imac.... but I would not panic at this temp it won't destroy the GPU although it could reduce stablity, I'd worry more if it went over 90C.

Nov 19, 2005, 08:16 PM
Don't stress it.

If it ever overheats, contact Apple. Apple will replace it if you are still under warranty. Applecare is also recommended for 2 year extension to your current standard warranty.

If it is running that hot on non-processor intensive task, it could be a hardware issue. Contact Apple about this issue.

If you are playing games, it is normal to have high temperatures. Nevertheless, not that high.

Personal recommendation:
The temperature readings seems to be wrong. It is absurdly high, well close to melting point. Try another system statistics software to monitor your internal components.